Year	2017 PPP (%)
1979	1.1
1989	15.6
1991	13.2
1995	10.5
1997	8.6
1998	9.4
1999	8
2000	6
2001	7.2
2002	3.8
2003	4
2004	3.4
2005	3.2
2006	3.9
2007	2.2
2008	1.1
2009	0.6
2010	1
2011	0.7
2012	1.1
2013	0.6
2014	0.9
2015	0.4
2016	0.4
2017	0.8
2018	0.4
2019	0.4
2021	0.5
2023	0.4